Should I invest in the eMaxis Slim All country as a short term resident?(Non-US,2 years)

I am on a student visa going to be studying in a Japanese university for the next 2 years. With a scholarship stipend combined with some part time work, I am able to save up on some funds (10 万 per month) . I am thinking of setting aside like 5万 per month into NISA(via IBKR) and putting it all in eMaxis, using the "All Country and Chill'' method of investing.

I am well aware that after my graduation I would be going back to my home country and that I have to withdraw everything. But I am wondering if 2 years of DCA is worth it, as the alternative is just having the money sit in my bank account.

Is the risk of selling low (in the situation that eMaxis dips when I graduate) a risk worth taking?

by NoVaEXWHY